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28853742 = 2319253103
BaseRepresentation
bin110111000010…
…0010111101110
32000021220220010
41232010113232
524341304432
62510234050
7500152461
oct156042756
960256803
1028853742
1115318275
1297b5926
135c93328
143b912d8
1527ee3cc
hex1b845ee

28853742 has 16 divisors (see below), whose sum is σ = 60744960. Its totient is φ = 9111672.

The previous prime is 28853729. The next prime is 28853749. The reversal of 28853742 is 24735882.

It is a self number, because there is not a number n which added to its sum of digits gives 28853742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28853749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126438 + ... + 126665.

It is an arithmetic number, because the mean of its divisors is an integer number (3796560).

Almost surely, 228853742 is an apocalyptic number.

28853742 is an abundant number, since it is smaller than the sum of its proper divisors (31891218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28853742 is a wasteful number, since it uses less digits than its factorization.

28853742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253127.

The product of its digits is 107520, while the sum is 39.

The square root of 28853742 is about 5371.5679275236. The cubic root of 28853742 is about 306.7143165298.

The spelling of 28853742 in words is "twenty-eight million, eight hundred fifty-three thousand, seven hundred forty-two".

Divisors: 1 2 3 6 19 38 57 114 253103 506206 759309 1518618 4808957 9617914 14426871 28853742